Use this overtime calculator to estimate regular pay, overtime pay, and total gross earnings. Enter your pay rate, regular working time, overtime hours, and multiplier to calculate time and a half, double time, or another overtime rate.
Keep regular hours and overtime hours separate. The calculator adds overtime pay to regular pay, so including the same hours in both fields will overstate your earnings.
How to use the overtime calculator
- Enter your Rate and select “per.” Enter your regular pay amount, then choose hour, day, work-week, or month. For example, enter 20 and select hour for a $20 hourly wage.
- Enter your regular Working time and select the Time unit. Choose hours, days, work-weeks, or months. This is the time paid at your regular rate, excluding the overtime you enter separately.
- Set the Multiplier. Use 1.5 for time and a half, 2 for double time, or the multiplier that applies to your situation. Enter the multiplier, not the overtime dollar rate.
- Enter Overtime hours. This field always uses hours, regardless of the unit selected for regular working time.
- Review the results. Regular Salary shows regular pay, Overtime Salary shows pay for overtime hours, and Total Salary adds the two together. These are gross amounts before deductions.
Use regular working time and overtime hours from the same period. For example, to estimate a week with 50 hours worked, where 10 qualify as overtime, enter 40 regular hours and 10 overtime hours—not 50 regular hours plus 10 overtime hours.
How pay and time units are converted
The calculator uses fixed hour equivalents for both the pay-rate period and the working-time unit:
| Selected unit | Hours used by the calculator |
|---|---|
| Hour | 1 |
| Day | 8 |
| Work-week | 40 |
| Month | 176 |
For example, a rate of $160 per day converts to $20 per hour, and 5 days of regular working time converts to 40 hours. A monthly rate of $3,520 also converts to $20 per hour because $3,520 ÷ 176 = $20.
These are conversion assumptions, not legal overtime thresholds or calendar-based calculations. If your workday, workweek, or monthly schedule differs, use an appropriate hourly rate and enter actual regular hours instead. Converting a salary to an hourly amount here does not establish overtime eligibility or the legally required regular rate of pay.
Overtime formula and worked example
The calculator first converts your pay rate and regular working time to hourly equivalents:
- Hourly rate = Entered rate ÷ Hours in the selected pay-rate period
- Regular hours = Working time × Hours in the selected time unit
It then calculates the three results:
- Regular Salary = Hourly rate × Regular hours
- Overtime Salary = Hourly rate × Multiplier × Overtime hours
- Total Salary = Regular Salary + Overtime Salary
Time and a half versus double time
Suppose you earn $20 per hour, work 40 regular hours, and have 10 overtime hours. The table compares the results using two different multipliers:
| Calculation | Time and a half: 1.5× | Double time: 2× |
|---|---|---|
| Overtime hourly rate | $20 × 1.5 = $30 | $20 × 2 = $40 |
| Regular Salary | 40 × $20 = $800 | 40 × $20 = $800 |
| Overtime Salary | 10 × $30 = $300 | 10 × $40 = $400 |
| Total Salary | $800 + $300 = $1,100 | $800 + $400 = $1,200 |
The multipliers describe the full rate paid for each overtime hour. Time and a half means 150% of the regular hourly rate; double time means 200%. Whether either rate applies depends on the relevant law, agreement, or employer policy.
What your overtime pay result means
Overtime Salary includes the full pay for overtime hours, not just the extra premium. In the time-and-a-half example, the $300 consists of $200 at the base rate plus a $100 overtime premium. A pay stub may display those components separately, so compare the combined amounts rather than expecting a single matching line.
Total Salary is gross pay for the period you entered. Despite the label, it is not necessarily an annual salary or take-home pay. The calculation does not subtract taxes, insurance, retirement contributions, or other deductions, and it does not include additional earnings unless they are reflected in the inputs.
If some overtime hours are paid at 1.5× and others at 2×, calculate each group separately and add their Overtime Salary results to regular pay once. Do not add the Total Salary results from both runs if they contain the same regular hours.
What the calculator does not determine
This tool performs the arithmetic using your inputs. It does not determine which hours qualify as overtime, select the legally required multiplier, or check payroll compliance.
- Eligibility and thresholds: Under U.S. federal law, covered, nonexempt employees generally qualify for overtime after 40 hours worked in a workweek. State rules, exemptions, and other requirements may differ. A biweekly or monthly pay period does not necessarily allow hours to be averaged across workweeks.
- The applicable regular rate: Some bonuses, commissions, or other compensation may affect the regular rate used for legal overtime calculations. It may differ from the base hourly wage entered here.
- Complex pay arrangements: Multiple job rates, shift differentials, daily overtime, and other special rules require additional review. This calculator applies one hourly-equivalent rate and one overtime multiplier at a time.
For payroll decisions or a suspected underpayment, check the applicable requirements and your time records with payroll staff or a qualified adviser.
Use the estimate to check pay or plan staffing
For employees: Compare the estimate with your time records and gross-pay statement. If the amounts differ, check regular versus overtime hours, the rate used, the multiplier, and whether the pay stub splits base pay from the overtime premium.
For employers: Test the wage cost of additional overtime before scheduling it. At $20 per hour with a 1.5× multiplier, each additional overtime hour adds $30 in gross wages. Employer payroll taxes, benefits, and other labor costs are separate, so this is not a complete staffing-cost estimate.
A staffing agency could use Calcopolis’s form builder with calculations to create a website estimator using its own shift lengths and overtime rates, helping clients estimate labor costs before requesting a quote.
Related pay and workforce calculators
- Gross Pay Calculator: Estimate earnings before taxes and other deductions, including overtime.
- Pay Rise Calculator: Estimate a new pay rate after a raise, then use the revised rate to compare overtime earnings.
- Billable Hours Calculator: Calculate the amount chargeable for client work. Billable hours and employee overtime hours are different measures.
- Billing Rate Calculator: Estimate an hourly client billing rate rather than an employee’s pay rate.
- Employee Productivity Calculator: Measure employee output to help evaluate whether additional working hours are producing useful results.
- Employee Absence Rate Calculator: Monitor absenteeism when reviewing staffing needs and overtime demand.